To obtain a permanent magnet-embedding motor, wherein the amount of materials disposed in the manufacturing process and which can be reduced in torque ripple, vibration, noise, and the like, by determining the shape of the ends of slits in rotor provided for embedding permanent magnets based on the relation between outside diameter, angle equivalent to one pole of the permanent magnets 1, and the like, and making a part of the outside diameter in a straight line shape.
In the permanent magnet-embedded motor having a rotor 11 having a plurality of the slits 20, in which the permanent magnets 12 are embedded, the slit 20 has a portion where a permanent magnet 12 is embedded in a direction orthogonal to the direction of the radius of the rotor 11, and L-shaped gap portions 22 positioned at both its ends; and the slits are constituted with 0.1≤θ2/θ1≤0.3, where θ1 is the angle corresponding to one pole of the rotor 11, and θ2 is the angle of the L-shaped gap portions.
KANEBAKO HIDEKI
OTSUKI NOBORU
CHO TONEI
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